Batch job blocks other jobs after running once

[tomvanhees2@gmail.com]

Hi all,

I have an issue with 2 batch jobs that are running overnight.
The 2 jobs run right after eachother (every night) and they both finish succesfully. The next morning when some other batch jobs try to run, they dont start.
As soon as I delete both jobs that were running during the night, the other jobs are starting.

Is there anybody who knows what this could be?

Thanks in advance.

Tom van Hees